1. NATURAL SURFACE, SPLIT SIDES
The surface of these flags is the natural porphyry one obtained by means of mechanical splitting of the natural surface or with sawn sides. They are divided into three groups according to their range of thickness: thin type, with thickness varying from 1.5 to 3cm; standard type, with thickness varying from 2 to 6cm; thick type, with thickness varying from 5 to 9cm. Different lengths are available from 10 to 40cm (multiples of 5cm); lengths are usually random, but fixed lengths are available on request. They are used for paving both public or private outdoor surfaces in all kinds of climates. Particularly suitable for squares, roads, arcades and pavements.

2. NATURAL SURFACE, SAWN SIDES
Natural surface flags are obtained by sawing natural surface slabs. They are classified according to their thickness and width (see relevant table) while lengths can be fixed or random. They are used for paving both public and private outdoor surfaces in all kinds of climates. Suitable for squares, roads, arcades and pavements.

3. TEXTURED SURFACE
Flags whose surface and thickness are calibrated to give them more well-finished and regular form; all sides are sawn. They are suitable in particular for laying both outdoor and indoor in elegant residential housing and shopping centres (houses, offices, museums, etc.).a) FLAMED SURFACE FLAGS
They are obtained from slabs which are sawn and flamed so that their surface regains a colour (chromatic) and a surface (to the touch) which are very similar to natural surface, but free from the irregularities that characterise natural surface. Sides are sawn and the thickness is fixed (2, 3 or 4cm). Width varies from 20 to 40cm; length is random or fixed. These flags are mainly used for paving entrances, terraces, internal spaces and vertical walling claddings.b) BRUSHED SURFACE FLAGS
They are obtained from slabs which are sawn, flamed and are subsequently brushed by means of a diamond grinding wheel into assorted granulometries. The brushing processing removes any irregularities left after flaming, so that the surface is more uniform and smooth to the touch. These flags are mainly used for paving entrances, terraces, internal spaces and bathroom or kitchen surfaces.c) SEMI-POLISHED SURFACE FLAGS
They are obtained from natural surface slabs of which a part is semi-polished and honed (approx. 70%). Suitable for indoor paving (offices, museums, banks, etc.) and kitchen or bathroom surface tops.d) POLISHED SURFACE FLAGS
They are obtained from slabs which are sawn and subjected to an abrasion process by means of wheels that have a polishing effect. Suitable for indoor paving (offices, museums, banks, etc.) and kitchen and/or bathroom surface tops.